Butterfly flange



FIG. 1 is a view of the butterfly flange on a tracheostomy tube.

FIG. 2 is a top view of the butterfly flange on a tracheostomy tube.

FIG. 3 is a view of the butterfly flange on a tracheostomy tube as seenfrom the proximal end.

FIG. 4 is a view of the butterfly flange on a tracheostomy tube as seenfrom the left side.

FIG. 5 is a view of the butterfly flange on a tracheostomy tube as seenfrom the right side.

FIG. 6 is a view of the butterfly flange on a tracheostomy tube as seenfrom the distal side; and,

FIG. 7 is a bottom view of the butterfly flange on a tracheostomy tube.

The broken line showing of a tracheostomy tube is included for thepurpose of illustrating environmental structure and forms no part of theclaimed design.

We claim the ornamental design for a butterfly flange, as shown anddescribed.